For some vehicles To ensure fit please match the 8th digit of your VIN number to the VIN code in the title. Your vehicles VIN number can be found in the lower left corner of the windshield or on your registration.

If you are hearing a whirring noise from the front of your engine or if your belt often screeches you may be in need of a new belt tensioner or idler pulley. The idler pulley is typically used to redirect the serpentine belt, or help to apply tension against the belt tensioner.

If you are replacing your serpentine belt tensioner, it is usually a good time to replace the idler pulley as well.

To ensure fit please match the 8th digit of your VIN number to the VIN code in the title. Your vehicles VIN number can be found in the lower left corner of the windshield or on your registration.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

Remove the idler pulley (0:31)

Use an 18 mm wrench to release tension from the serpentine belt.

Move the serpentine belt off the idler pulley.

Use an 15 mm wrench to remove the pulley.

Install the new idler pulley (1:27)

Thread the bolt with the spacer and put it into the pulley and install the idler pulley.

Use your 15 mm wrench to tighten down the idler pulley.

Use your 18 mm wrench to release tension from the serpentine belt and loop the belt back around the idler pulley.